Code in Viusal Basic

Property setting:
    Type
    Name
    Description
    RadioButton
    radAdd
    For addition
    RadioButton
    radSub
    For subtraction
    RadioButton
    radMul
    For multiplication
    RadioButton
    radDiv
    For Division
    Label
    Default
    
    Label
    default
    
    Button
    btnCheck
    Checking answer
    Button
    btnNext
    Next expression calculation
    TextBox
    txtAnswer
    
    Label
    IbIProblem
    
Add the following code for Form:
Const MAXRANGE as Integer =100
Const MINVAL As Integer = 20
Dim answer As Integer = 0
Add the following code for Check button:
Private Su btnCheck_Click(sender As Object, e As...